Medical Instrument

Abstract

A medical instrument which allows ligation in a living body to be efficiently carried out in safety by only one operator, or one operator and an assistant is provided. The medical instrument comprises a puncture needle for surgical suture insertion (20); a puncture needle for surgical suture gripping (30); a stylet (40) which is slidably inserted into the inside of the puncture needle for surgical suture gripping (30); and a fixing member (50) to which the puncture needle for surgical suture insertion (20) and the puncture needle for surgical suture gripping (30) are fixed, and when an annular member (42) which is formed at the distal end of the stylet (40) is projected from the distal end of the puncture needle for surgical suture gripping (30), the annular member (42) is extended such that the central axis of the puncture needle for surgical suture insertion (20) or its extension line penetrates through the inside of the annular member (42), with a feeding-out mechanism (60) which sequentially feeds out a surgical suture (S) toward the distal end thereof being provided on the proximal end side of the puncture needle for surgical suture insertion (20), and a projection mechanism (70) which causes the annular member (42) accommodated in the inside of the puncture needle for surgical suture gripping (30) to be projected from the distal end of the puncture needle for surgical suture gripping (30) being provided on the proximal end side of the puncture needle for surgical suture gripping (30).

Description

TECHNICAL FIELD[0001]The present invention relates to a medical instrument which is used when a catheter is transcutaneously inserted into an abdomen viscus. Particularly, the present invention relates to a medical instrument which is used to fix the front abdominal wall and the splanchnic wall to each other for facilitating insertion of a catheter in endoscopic gastrostomy which is carried out for such a purpose as nutrient supply, body fluid draining, or the like.BACKGROUND ART[0002]Conventionally, for patients who need long-term administration of nutritions, laparotomic gastrostomy has been carried out. However, a general gastrostomy technique involves excessive surgical invasiveness, thus, depending upon the condition of the patient, it is often impossible to make operation. Then, recently, gastrostomy techniques which minimize the surgical invasiveness have been devised, and a variety of medical instruments for accomplishing them have been proposed.[0003]For example, the presen...

AI Technical Summary

Benefits of technology

"The present invention provides a medical instrument for gastrostomy that can be easily operated with one hand, and can be performed even in a hospital facility where no endoscope operator is available. The instrument includes a puncture needle for surgical suture insertion, a puncture needle for surgical suture gripping, and a fixing member to which the puncture needles are fixed. The instrument also includes a feeding-out mechanism for sequentially feeding out a surgical suture inserted into the puncture needle for surgical suture insertion, and a projection mechanism for projecting the annular member of the stylet, which is accommodatable in the puncture needle for surgical suture gripping. The instrument can be easily operated with a single hand, and can be performed even in a hospital facility where no endoscope operator is available."

Problems solved by technology

However, even with the aforementioned prior art invention, for carrying out a general gastrostomy, there has been a need for one operator, one endoscope operator, and one assistant for manipulating the medical instrument, and in a hospital facility where no endoscope operator is available, it has been difficult to carry out gastrostomy.

In addition, the personal expenses required have been high.

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